Band-cutter



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Cfu. HILL. BAND GUTTER.

N0. 404,840. Patented June 11.1889.

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C. H. HILL. BAND GUTTER.

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UNITED STATES PATENT OFFICE.

OHAUNCY I-l. HILL, OF MINNEAPOLIS, MINNESOTA.

BAND-CUTTER.

SPECIFICATION forming part of Letters Patent No. 404,840, dated June 11,1889.

Application filed September 14, 1888.

T0 all 'whom t may concern:

Be it known that I, CHAUNCY H. HILL, a citizen of the United States, anda resident of the city of Minneapolis, county of Hennepin, State ofMinnesota, have invented a certain new and useful Improvement in Band-Outters for Thrashing-Machines, of which the following is aspeciiication, reference being had to the accompanying drawings.

The object of my invention is to simplify and improve band-cuttingmechanism.

To this end my invention consists in the construction hereinafterdescribed, and particularly pointed out in the claims.

Referring to the drawings, wherein like letters represent like partsthroughout, Figure I is a side elevation, Fig. II a plan, and Fig. IIIan end view, of my band-cutter detached from the thrashing-machine.

A represents a supporting-frame adapted to be attached in any suitablemanner to the side of the mouth of the thrashing-machine. (Not shown.)

B is a carrier-frame, pivotally connected by hinges l) to the main frameA. t

C is an endless carrier, preferably made of canvas, with cross-slats c,mounted upon rollers I) D', which are journaled in the opposite ends ofthe carrier-frame B. The carrier-frame is bracedand locked in its properworking position by a suitable brace-rod E. As shown, this is a hookedbrace pivoted at one end to an angle-iron e, rigidly bolted to the mainframe and engaging by its hooked extremity with a perforated lug orcyebolt e', secured to the carrier-frame.

On the inner corner of the main frame is rigidly secured an overhangingshaft-frame F, consisting of a vertical metallic standard 4o f, boltedto the end and side bars of the main frame, and a right-angled hollowextension or sleeve f', cast integral with the top thereof,- andextending inward parallel with the end bars of the main frame and thecarrier-rollers to a point near the center line of the carrier. Theoverhanging part of this framee'. e., the sleeve f --is at a properheight above the level of the carrier to afford sufficient clearance forthe free passage of the cutbun- Serial No. 285,362. (No model.)

dles. The standard fmay be braced by a tie-rod a.

Within the sleeve f is a hollow shaft G, of greater length than thesleeve f', having on one end a crank g and on the other a rigidbracket-arm g', extending to a point directly over the inner end of thecarrier O. Inside the hollow shaft G is a longer solid shaft H, havingon its outer end a sprocket wheel K and on its inner end a cam-wheel L.This cam-wheel is provided with a camchannell onv its inner face,approximately elliptical in-shape.

To the outer end of the rigid arm g', and at right angles thereto, isattached a cutter-bar M, provided with fixed triangular or sickle shapedknives m. On the inner face of the cutter-bar M are keepers m', in whichis mounted a reciprocating cutter-bar N, having triangular or sickleshaped knives n. On the arm g,preferably near its connection to thehollow shaft G, is pivoted in the horizontal plane, by the pivot-pin p,a bell-crank lever P, whose shorter arm p is provided with a roller Q,adapted to work in the cam-channel Z, and whose longer arm p isconnected by the rod R with the cutter-bar N; hence, on turning theshaft H, a reciprocating motion will be imparted to the cutter-bar N andits knives n.

A shaftv S is journaled in suitable supports on the end of the mainframe A, adjacent to the inner corner of the carrier-frame B, and isprovided with an eccentric S', a sprocketwheel S, and a beveledgear-wheel S". A sprocket chain K connects the Wheels S and K.

T is the eccentric-strap. An eccentric-rod made in two telescoping partsW WV connects the eccentric-strap with the crank g. The telescopingjoint is formed by an open link t, formed on the lower end of the uppersection IV of the eccentric-rod, which is swiveled on the upper end ofthe lower section WV. The end of the section WV within the link t isprovided with an enlarged head t. Encircl'ing the section W, between thehead t andthe lower end of the link t, is a strong coiled spring X,tending to keep the two parts together. The effect of this constructionis to make the eccentric-rod automatically adjustable lengthwise by thepressure of the grain, rendering it adaptable to different-sizedbundles.

Y is the main driving-shaft mounted in suitable supports Y', rigidlysecured to the main frame. This shaft is arranged parallel to the sidesof the main frame adjacent to the bevel gear-wheel S". It is providedwith a bevel gear-wheel Z, engaging with the gearwheel C and with a maindriving-pulley Z', adapted to be coupled by suitable beltingto a sourceof motion. (Not shown.) I have shown a complete band-cutter adapted forattachment to the right-hand side of the thrashingmachine. It will beunderstood, of course, that a similar one is used 011 the other side.

I have `shown on the inner end of the shaft Y a coupling Z, by means ofwhich, if so desired, both cutters may be connected and driven from asingle belt. In practice, however, I prefer to use an independent beltfor cach cutter, connecting to independent pulleys on the opposite sidesof the thrashingmachine. As both sides are exactly alike inconstruction, I have deemed it unnecessary to show more than one in thedrawings.

The operation is evident from the description. A rocking motion isimparted to the shaft G by the eccentric on the constantlyrunning shaftS and its connection to the crank g, the effect of which is to move therigid arm g and its cutter-bars up and down in the are of a circle. r1hc arc through which the cutter-bars move will vary in length more orless from the normal throw of the eccentric, according to the size ofthe bundle, the two parts of the eccentric-rod moving lengthwise awayAfrom each other under the pressure of the bundle against theresistancespring X. The eccentric-rod is et' a proper length when thetwo parts are drawn together to their limit to bring the knives to apoint within 'two or three inches of the carrier at the limit of the'forward and downward throw of the shaft G. From the cam Il on shaft IIand its coni'iections--the bell-crank lever I and link R--a continuousreciprocating motion is imparted to the cutter-bar N and its knives n.The bundles are placed on the carrier parallel with the cutter-bars, andas they pass under the bands are severed by the compound motion of theknives.

The shafts S, II, and G are geared n p to run at a relatively high rateof speed. IIence there will be several up and down movements ot thecutter-bars during the passage of a single bundle, the effect of whichis to render it next to impossible for a bundle to pass without. theband being cut, to afford clearance as needed, and to partially separateand spread out the out bundle.

The compound motion of the knives is an important feat-ure in mymechanism. I thereby secure the eilect of a double sickle and ashear-like or drawing cut at the saine time.

The carrier is driven directly from the shaft S.

Minor features may be changed without departing from the spirit of myinvention.

IVhat I claim, and desire to secure by Letters Patent of the UnitedStates, is as follows:

l. In band-cutters, the combination, with an endless carrier, of arock-shaft having a rigid arm overhanging said carrier transverse to theplane of its movement, a'cutter on the outer end oi said arm, adriving-shaft provided with an eccentric or crank, an extensibleconnecting-rod from said eccentric to said rock-shaft, and aresistance-spring acting on said rock-shaft in opposition to thepressure of the bundles, substantially as described..

2. In band-cutters, the combination, with an endless carrier, of arock-shaft provided with a crank and a rigid arm overhanging saidcarrier transverse to the plane of its movement, a cutter on the outerend of said arm, a driving-shaft provided with an leccentric, atelescopic eccentric-rod connecting said eccentric and the crank of therock-shaft, and a spring connecting and tending to draw together thetelescopingparts oi said eccentricrod, substantially as described.

3. In band-cutters, the combination, with an endless carrier, of ahollowrock-shaft having a cutter-supporting arm overhan gin g saidcarriertransverse to the plane ef its movement, a constantly-revolvingshaft within said rock-shaft provided with a cam, Iixed and movablecutters on said supporting-arm, and a connection from said cam to saidmovable cutters for operati ng the same, substantially as described.

4. In band-cutters, the combination, with an endless carrier and adriving-shaft having an eccentric, of a hollow rock-shaft having a crankand a rigid cutter-supporting arm overhanging said carrier, anextensible eccentric-rod coupling together said crank and eccentric, afixed and a movable cutter-bar provided with knives mounted on saidsupporting-arm, a constantly-rcvolving shaft located within saidrock-shaft and provided with a cani, and a connectionfrom saidcam tosaid movable cutter-bar, si'ibstantially as described.

5. In band-cutters, the combination, with an endless carrier and adriving-shaft having an eccentric, of a shaft frameor support overhanging the path of the bundles, a hollow rock-shaft havin a crank-arm and arigid cutter-supporting arm overhanging said carrier transverse totheplane of its movement, vfixed and movable cutter-bars having knivesmounted on said arm, an automatially-extensible eccentric-rod couplingsaid eccentric and crank, a revolving cam-shaft within said rock-shaftprovided with a cam, a bell-crank lever pivoted to said rock-shaft,having one arm in engagement with said cam and the other connected tosaid movable cut- IOO IIO

ter-bar, and a connection from said cam-shaft to said driving-shaft, asand for the purpose set forth.

6. In band-cutters, the combination, with an endless carrier, of arock-shaft having a crank and a cutter-supporting arm overhanging saidcarrier, a xcd and a reciprocating cutter mounted on said arm, adriving-shaft provided with an eccentric, and anautomatically-extensible eccentric-rod coupling said rol eccentric andthe crank of said rock-shaft,

substantially as described.

CHAUNOY H. HILL.

In presence of- JAS. F. WILLIAMSON, EMMA F. ELMORE.

